Top answers

What is the role of cilia and mucus in the lungs?

The cilia and sticky mucus work together to protect the lungs from infection, forming what is known as a mucociliary escalator. The mucus traps any bacteria or pathogens as they enter the lungs, and the cili...
CH
Answered by Corrina H. • Biology tutor
19158 Views

Explain why an artery may be described as an organ.

Tissues are defined as being a collection of different types of cell. Similarly, organs are defined are being a collection of tissues , which are joined in a structural unit to serve a common function.An art...
MS
Answered by Matt S. • Biology tutor
35640 Views

How does integration by parts work?

The method of integration by parts is working upon the Product Rule in differentiation. We know the Product Rule to be d/dt (uv) = uv' + vu', where u and v are separate functions and u' and v' are the corres...
FI
Answered by Finn I. • Maths tutor
3607 Views

Discuss the ethical issues of IVF in humans

There are several arguments for having in vitro fertilisation. Firstly, it allows people who couldn't otherwise have children to start a family. Also the embryos that are used for IVF, if there are signs tha...
EC
Answered by Elsa C. • Biology tutor
3055 Views

Solve algebraically the following system of equations: 4x + 5y = -3; 6x - 2y = 5

To solve these algebraically, we need to eliminate one of the two variables (either x or y) and solve for the remaining variable. We then substitute the answer found into one of the two given equations to fi...
CS
Answered by Cara S. • Maths tutor
6433 Views